Proverbs 26:4 in the World English Bible
Don’t answer a fool according to his folly, lest you also be like him.
Context
3 A whip for the horse, a bridle for the ass, and a rod for the fool’s back.
4 Answer not a fool according to his folly, lest thou also be like unto him.
5 Answer a fool according to his folly, lest he be wise in his own conceit.